X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Fitem.cc;h=e559f6abed70559008846c4bd42909c6d1f29682;hb=1b67b706db8d1098bd2724e99f99a22132c99c68;hp=d9abade41bf7e23fb80ad3bff5b1bc4f89eb568f;hpb=2f7d8073cb6167570088c86c047030dd57a2d9e7;p=lilypond.git diff --git a/lily/item.cc b/lily/item.cc index d9abade41b..e559f6abed 100644 --- a/lily/item.cc +++ b/lily/item.cc @@ -3,183 +3,292 @@ source file of the GNU LilyPond music typesetter - (c) 1997--2000 Han-Wen Nienhuys + (c) 1997--2009 Han-Wen Nienhuys */ -#include "dimension-cache.hh" -#include "paper-score.hh" -#include "debug.hh" #include "item.hh" + +#include "axis-group-interface.hh" +#include "paper-score.hh" +#include "warn.hh" #include "paper-column.hh" -#include "spanner.hh" #include "lily-guile.hh" +#include "system.hh" +#include "pointer-group-interface.hh" -Item::Item () +#include "moment.hh" + + +Grob * +Item::clone () const { - broken_to_drul_[LEFT] = broken_to_drul_[RIGHT]=0; + return new Item (*this); } -bool -Item::breakable_b () const +Item::Item (SCM s) + : Grob (s) { - if (original_l_ ) - return false; - - Item * i =dynamic_cast (parent_l (X_AXIS)); - return (i) ? i->breakable_b () : to_boolean (get_elt_property( "breakable")); + broken_to_drul_[LEFT] = broken_to_drul_[RIGHT] = 0; + cached_pure_height_valid_ = false; } -Real -Item::hpos_f() const +/** + Item copy ctor. Copy nothing: everything should be a elt property + or a special purpose pointer (such as broken_to_drul_[]) */ +Item::Item (Item const &s) + : Grob (s) { - return relative_coordinate (0, X_AXIS); + broken_to_drul_[LEFT] = broken_to_drul_[RIGHT] = 0; + cached_pure_height_valid_ = false; } -Line_of_score * -Item::line_l() const +bool +Item::is_non_musical (Grob *me) { - Score_element *g = parent_l (X_AXIS); - if (!g) - return 0; - return dynamic_cast (g)-> line_l (); -} + if (me->original ()) + return false; + Item *i = dynamic_cast (me->get_parent (X_AXIS)); + return i ? Item::is_non_musical (i) : to_boolean (me->get_property ("non-musical")); +} -void -Item::copy_breakable_items() +Paper_column * +Item::get_column () const { - Drul_array new_copies; - Direction i=LEFT; - do - { - Score_element * dolly = clone(); - Item * item_p = dynamic_cast(dolly); - pscore_l_->typeset_element (item_p); - new_copies[i] =item_p; - } - while (flip(&i) != LEFT); - broken_to_drul_= new_copies; + Item *parent = dynamic_cast (get_parent (X_AXIS)); + return parent ? parent->get_column () : 0; +} - do - { - broken_to_drul_[i]->handle_prebroken_dependencies(); - broken_to_drul_[i]->try_visibility_lambda(); - } - while (flip(&i) != LEFT); +System * +Item::get_system () const +{ + Grob *g = get_parent (X_AXIS); + return g ? g->get_system () : 0; } void -Item::try_visibility_lambda () +Item::copy_breakable_items () { - SCM vis = remove_elt_property ("visibility-lambda"); - if (gh_procedure_p (vis)) + Drul_array new_copies; + Direction i = LEFT; + do { - SCM args = scm_listify (gh_int2scm (break_status_dir ()), SCM_UNDEFINED); - SCM result = gh_apply (vis, args); - bool trans = gh_scm2bool (gh_car (result)); - bool empty = gh_scm2bool (gh_cdr (result)); - - if (empty) - { - set_empty (X_AXIS); - set_empty ( Y_AXIS); - } - if (trans) - set_elt_property ("transparent", SCM_BOOL_T); + Grob *dolly = clone (); + Item *item = dynamic_cast (dolly); + get_root_system (this)->typeset_grob (item); + new_copies[i] = item; } + while (flip (&i) != LEFT); + + broken_to_drul_ = new_copies; } bool -Item::broken_b () const +Item::is_broken () const { return broken_to_drul_[LEFT] || broken_to_drul_[RIGHT]; } +/* + Generate items for begin and end-of line. +*/ void -Item::do_break () +Item::discretionary_processing () { - if (broken_b ()) + if (is_broken ()) return; - if (breakable_b ()) - { - copy_breakable_items(); - handle_prebroken_dependencies(); - - /* - Otherwise the broken items won't be pre_process()'ed. - */ - - if (broken_to_drul_[LEFT]) - { - add_dependency (broken_to_drul_[LEFT]); - add_dependency (broken_to_drul_[RIGHT]); - } - } - try_visibility_lambda (); // ugh. -} - -void -Item::do_breakable_col_processing() -{ - do_break (); + if (Item::is_non_musical (this)) + copy_breakable_items (); } -Score_element* -Item::find_broken_piece (Line_of_score*l) const +Grob * +Item::find_broken_piece (System *l) const { - if (line_l() == l) - return (Item*)(this); + if (get_system () == l) + return (Item *) (this); Direction d = LEFT; - do { - Score_element *s = find_broken_piece (d); - if (s && s->line_l () == l) - return s; - } + do + { + Grob *s = broken_to_drul_[d]; + if (s && s->get_system () == l) + return s; + } while (flip (&d) != LEFT); return 0; } -Item* -Item::find_broken_piece (Direction d) const +Item * +Item::find_prebroken_piece (Direction d) const { - Item * me = (Item *) (this); + Item *me = (Item *) (this); if (!d) return me; - else if (breakable_b ()) + return dynamic_cast (broken_to_drul_[d]); +} + +Direction +Item::break_status_dir () const +{ + if (original ()) { - me->do_break (); - return dynamic_cast (broken_to_drul_[d]); + Item *i = dynamic_cast (original ()); + + return (i->broken_to_drul_[LEFT] == this) ? LEFT : RIGHT; } else - return 0; + return CENTER; } -Paper_column * -Item::column_l () const +void +Item::handle_prebroken_dependencies () { - return dynamic_cast (parent_l (X_AXIS))->column_l (); + Grob::handle_prebroken_dependencies (); + + /* + Can't do this earlier, because try_visibility_lambda () might set + the elt property transparent, which would then be copied. + */ + if (!Item::break_visible (this)) + suicide (); } -Item::Item (Item const &s) - : Score_element (s) +bool +Item::break_visible (Grob *g) { - broken_to_drul_[LEFT] = broken_to_drul_[RIGHT] =0; + Item *it = dynamic_cast (g); + SCM vis = g->get_property ("break-visibility"); + if (scm_is_vector (vis)) + return to_boolean (scm_c_vector_ref (vis, it->break_status_dir () + 1)); + return true; } -Direction -Item::break_status_dir () const +bool +Item::pure_is_visible (int start, int end) const { - if (original_l_) + SCM vis = get_property ("break-visibility"); + if (scm_is_vector (vis)) { - Item * i = dynamic_cast (original_l_); + int pos = 1; + int pc_rank = Paper_column::get_rank (get_column ()); + if (pc_rank == start) + pos = 2; + else if (pc_rank == end) + pos = 0; + return to_boolean (scm_vector_ref (vis, scm_from_int (pos))); + } + return true; +} - return (i->broken_to_drul_[LEFT] == this) ? LEFT : RIGHT; +Interval_t +Item::spanned_rank_interval () const +{ + int c = get_column ()->get_rank (); + return Interval_t (c, c); +} + +Interval_t +spanned_time_interval (Item *l, Item *r) +{ + Drul_array bounds (l, r); + Interval_t iv; + + Direction d = LEFT; + do + { + if (bounds[d] && bounds[d]->get_column ()) + iv[d] = robust_scm2moment (bounds[d]->get_column ()->get_property ("when"), + iv[d]); } - else - return CENTER; + while (flip (&d) != LEFT); + + do + { + if (!bounds[d] || !bounds[d]->get_column ()) + iv[d] = iv[-d]; + } + while (flip (&d) != LEFT); + + + return iv; +} + + +void +Item::derived_mark () const +{ + if (broken_to_drul_[LEFT]) + scm_gc_mark (broken_to_drul_[LEFT]->self_scm ()); + if (broken_to_drul_[RIGHT]) + scm_gc_mark (broken_to_drul_[RIGHT]->self_scm ()); +} + +Item * +unsmob_item (SCM s) +{ + return dynamic_cast (unsmob_grob (s)); +} + +Interval +Item::pure_height (Grob *g, int start, int end) +{ + if (cached_pure_height_valid_) + return cached_pure_height_ + pure_relative_y_coordinate (g, start, end); + + cached_pure_height_ = Grob::pure_height (this, start, end); + cached_pure_height_valid_ = true; + return cached_pure_height_ + pure_relative_y_coordinate (g, start, end); +} + +bool +Item::less (Grob * const &g1, Grob * const &g2) +{ + return dynamic_cast (g1)->get_column ()->get_rank () < dynamic_cast (g2)->get_column ()->get_rank (); } +ADD_INTERFACE (Item, + "Grobs can be distinguished in their role in the horizontal" + " spacing. Many grobs define constraints on the spacing by" + " their sizes, for example, note heads, clefs, stems, and all" + " other symbols with a fixed shape. These grobs form a" + " subtype called @code{Item}.\n" + "\n" + "Some items need special treatment for line breaking. For" + " example, a clef is normally only printed at the start of a" + " line (i.e., after a line break). To model this," + " @q{breakable} items (clef, key signature, bar lines, etc.)" + " are copied twice. Then we have three versions of each" + " breakable item: one version if there is no line break, one" + " version that is printed before the line break (at the end of" + " a system), and one version that is printed after the line" + " break.\n" + "\n" + "Whether these versions are visible and take up space is" + " determined by the outcome of the @code{break-visibility}" + " grob property, which is a function taking a direction" + " (@code{-1}, @code{0} or@tie{}@code{1}) as an argument. It" + " returns a cons of booleans, signifying whether this grob" + " should be transparent and have no extent.\n" + "\n" + "The following variables for @code{break-visibility} are" + " predefined:\n" + "@example\n" + " grob will show: before no after\n" + " break break break\n" + " all-invisible no no no\n" + " begin-of-line-visible no no yes\n" + " end-of-line-visible yes no no\n" + " all-visible yes yes yes\n" + " begin-of-line-invisible yes yes no\n" + " end-of-line-invisible no yes yes\n" + " center-invisible yes no yes\n" + "@end example", + /* properties */ + "break-visibility " + "extra-spacing-height " + "extra-spacing-width " + "non-musical " + );